Is the water level constant or has it changed with temperature?

As the water at boiling point changes to vapour its temperature -

An ideal gas has molar specific heat 5R/2 at constant pressure. If 300 J of heat is given to two moles of gas at constant pressure, the change in temperature is:

Calculate the dissociation constant of water at room temperature

(A): Speed of sound in a gas is independent of changes in pressure of the medium at a given temperature. (R): A change in pressure of a gas is always accompanied by a change in density so that their ratio is always constant at a given temperature.

100ml of water at 20^@C and 100ml of water at 40^@C are mixed in calorimeter until constant temperature reached. Now temperature of the mixture is 28^@C . Water equivalent of calorimeter is

What property of a reaction can be used to predict the effect of a change in temperature on the magnitude of an equilibrium constant?

The ionic product of water at 60^(@)C is 9.55 xx 10^(-14) "mole"^(2) lit^(-2) . The dissociation constant of water at the same temperature is